Folding machine and method



June 22 ,1926. 1,589,718

A. R. RIDDERSTROM FOLDING MACHINE AND METHOD Filed Nov. 5, 1922 folding a binding strip around the edge of a bindin markedly of the up the secured-together edges land 8. It will Patented June 22 1926.

rice.

ANDREW Ra RIDDERSTROM, OF NARA NT, M FOLDING MACHINE COMPANY, OF LYNN, MASSACHUSETTS.

FOLDING MACHINE ASSAC HUSETTS, ASSIGNOR TO BEACON. MASSACHUSETTS, A CORPORATION 01' AND lvinrnon.

Application filed November 3, 1922. v Serial No -588,716.

The present invention relates more parbe ticularly to methods of and machines for boot or shoe upper to which it is attached. The machine that is illustrated, described and claimed in Patent No. 1,527,396, grant- -ed February 24, 1925, is ver well adapted to folding binding stri s of c th, silk and the like, and also to fol ing binding strips made of heavier materials, like leather. Leather g strips are thicker than cloth, silk and the like, however, so that the finally folded, leather binding strip stands out very upon the'boot or shoe upper to is attached, along the line of attachan which it ment.

, It is therefore an object of the present nvention to provide an Iimprovedmethod of folding leather binding strips, whereby the folded leather binding strip may be caused to lie substantially flush with the face per to which it isattached, along the line of attachment; and 'to provide an improved machine for carrying out the niethod. Other objects will appear herein-' a ter.

'by referringto the accompanying drawings, in which Fig. l is a perspective view oftlie upper, forward'part of a machine constructed as described in the above-identified application, but modified in accordance with the present invention, parts being broken away for cleatness; Fig. 2 is a similar fragmen-j tary plan view, illustrating the operation of the machine shown in Fig. 1: Fig. 3, is a similar fragmentary .perspective view, illustrating the folding action at ajs'harp, convex curve; Fig. 4 is a sectional view of a shoe upper, showing a binding strip as it usually appears whenattached to an edge of the upper; and Figs. 5 and 6 are sections similar to Fig. 4, illustrating steps in folding the binding strip around the shoe upper.

The invention is illustrated in'the accompanying drawings in connection with the folding of a binding strip 2, of leather and the like, around the edge 4: of a sheet of leather or-other material 6, such as a boot or shoe upper. An edge 8'oi the binding strip is sewed to a face 10 of the shoe upper, along the edge 4, so that the qlea sheet and the strip extend at an angle to each other from applicable to other articles is herein chosen for and the elements of the article need not necessarily be of the relative dimensions 7 shown.

As in the machine of the above-described patent, the shoe upper is initially placed upon a platform or support 24, with the face The free e moved acro gether edges and 8, into the space between and from a portions of wiped tightliy edges 4 and 8, by-the'com wiper 38 and a retainer presses down heavily at thi upper, directly opposite to tion of thewiner. portions are initially intermittently folded arqund the seci'iredgether edges 4 and 8 U i The invention, will be better understoodhyfih F ow and; between .32, ithereby' nulle intermittent wiping,- pin'g operations'are ,CBSSIVB. portions 0 The folded portions a feed point and definiteness to r The wiper acts intermittently,

direction rearwardly oblique to th oblique to the plane of the leath described in the above-identified first engages the strip at subst point where the strip is att'a understood that the invention is equall ll than that whic purposes of illustration,

ofthe u per in contact with the sup ort.

go 26 of the strip 2 is initially l6 ss and around the secured-tointerior side face28 of a feed point 30 a plow 32 that stands up integrally plate 34 byiwhich it'is carried. The 70, chine beingikeetintooperation, successive t e strip 2 are intermittently across "the secured-together bined action of a point 246 that n s time upon the the point of ac The successively wiped they are gripped interthe interior side face 28 rfeed'point 'andthe upstanding plow d tightly; The and folding and grips-I88 erformed' upon the sue-"- the strip alternately. re then advanced by the cooperating feed block 41 is folder, hereinafter for 00 eferred to as a fold presspresses downt'the, initially formed. folds 0 even contact withthe face '16 of the gure 6. These opera- I timed relation to each il the' .whole strip has become a folder 42.:

at spaced strip, in a e strip and er sheet, as, patent. Itantially the ched to the direction of 105 separated portions only of the ther sheet, and moves in the the arrow of Figure 2,. forward, and obliquely the strip. In so doing, it bites firmly into towards the unsecured edge 26 of the strip and wipes it tightly across the secured together edges 4t and 8. The successive, active wiping portions of the wiper remain ot'the some level, directly opposite the retainer so that the retainer, when opersting idly, can not engage the wiper and injure Thewiper then returns, and the cycle of operations is repeated, the stock having meanwhile been fed forward another step. To ell ect the desired operation of the wiper, it is mounted over a crank stem or eccentric 3i that is ohliquely or diagonally mounted at the end of a rotating shaft 52. The shaft 52 is rotated by mechanism fully described in the above-mentioned patient. As the shaft 52 is rotated the obliquely disposed crank stem 31 will he moved so as to cause the wiper to he wiggled in a fashion that will he readily understood by persons skilled in the'urt. Reference is made to the said patent for further details of construction, and for a, description of the manner in which the feed block 4i and the feed point 30 are reciprocated towards end. from the fold'presser It is sullicient to state here that. during the haclzwsrd movement of the feed elements and the plow from the fold presser towerdsthe wiper, the feed point first. rises and then, towards the end of the backward movement it descends e'gain. During this backward movement, a space is provided between the interior face 28 of the feed point and the plow, allowing the strip 2 in between to become slack or loose. The plow is thus enabled to fold most e'd'cctively, without interference from iriotionhy the feed point.

The hinding'strip is maintained in folded position upon the face 16 of the leather h priwiously applied cement. If the initially folded strip were permitted to contact with the edges 4 and 8 before ithas become tightly gripped and pulled rig t by the combined action of the feed point and the plow, it. would not he possible to pull the strip tight, and the resulting fold would he defective. A separator 14-3 is therefore provided just in front of the plow to maintain the strip separated from the row edges t and 8 until after. the feed point and the plow have had an opportunity to pull the strip tight The separz or M3 maintained in place hetween the lnndingr strip and the raw edges lend 8 until the forward movement.- of the feed elements, carrying the stock with them, causes the separator to he left behind. The. hind r strip can not. therefore. stick to the edges :4 and 8 before it has been properly folded over.

The upper is adrencedhy the feed elements and the plow to l diagonally oilsct, edge 14 i of the fold presser 4E) under which edge the initially plow-folded strip is tioncd and hy which it is 'iinched at the very fold. The pinched told 15 leter pressed into even Contact with the face 16 of the vided at the free end of an arm ltlO. The

curvilinear working face 16% ot the fold prcsser descends with a rolling action upon the strip. The previously pinched fold, after it is udvnnced, on the nest feed movement, under the cylindrical face 164, is thus pressed out or rolled over. The fold presser is spring-pressed towards the support El by a compression spring 166 n'iounted upon a rod 168 extending throughnn opening (not shown) in the arm 160 and screw-threaded into the trame. By means of the screw threads, the pressure of the spring upon the arm 160 may he {adjusted the ends of the spring being confined between the arm and e, knurled head 170 upon the rod 168. The working face 164; of the fold presser may he provided with teeth or may be otherwise roughened, to enable it to secure a firm grip upon the strip at thickened, places, such as seams, therehy m ercoming the tendency which the fold presser would otherwise, have to push the stock away instead of ironing it out. The feed point is preferably also provided with gripping teeth.

The retainer point 246 is carried by a retainer 158 and presses down upon the stock to prevent the stock being pushed outward. away from the. operating instrurnentalitics of the machine; to hold the stock, firmly against accidentalrnovenient during the return movement of the feed elements; and, tic-operating with the wiper, to grip the stoclt ata point near the raw edge, directly opposed to the point'of notion of the wiper, and to hold the stock while the wiper performs its wiping action. 1

An arm 250 of somewhat greater length then that of the retainer point is provided for the purpose of contacting with a, station ary port of the machine at so that when the machine runs idly, the retainer point 246 cennit become lowered into contact with the wiper and, by hammering away at the wiper, injure it. The retainer is shown bowed out at 248 so as not to obstruct the view of the operator. The retainer point 2-16 is pro videdwith teeth (not shown). the more firmly to hold the stock. The retainer presses down firmly, and the wiper wipes, during the return movement of the feed ele ments Upon the feed elements resecuring their grip upontho stock; in preparation for. another feed moven'ient the wiper and the retninerrelesse their hold upon the-stock, the wiper moving downward. away from the stock ashes already been described, and lbhc retainer similarly moving upward.

The foregoing brief description of the machine of the aforementioned patent will suPfic-e a, setting for the features of "only, to. make clearer the face 10 of the up or near the;

7 condition,

'cumlocution 0 novelty that are now to be explained, and it willbe understood .that the said features of novelty are not restricted to any particular machine, the tmachine'of the said patent being chosen for illustrative urposes description that isnow to follow. i

n object-of the present invention is to cause. the folded leather or other binding strip 2 tolie substantially flush with the face 10 of the upper 6 art-233, alon the line of its attachment to the upper. is shown in Figs. 3' and 6, this is accomplished, according to the preferred embodiment of the present invention, by hollowin out the Tine 233, and filling in the ho low with the near-lying portions of the strip 2.

To bring about this result, the sheet 6 is not fed over the support 24 in "quite flat successive portions of the margin of the sheet, along the .ed e 4, are bent a little out of the plane 0 the sheet upward, or in a direction away from the stitched portion of the stri 2. In order to avoid-cirlanguage, the. ex ression bending up the edge of the sheet or its equivalent will be employed in the specification and the claims to denote such bending of the margin of the sheet-in a' direction away from. the stitched ortion. of the strlp 2. The unsecured portion ofthe strip is moved lightly across the secured-together edges, as is illustrated in Fig. 5. The sheet is fed forward, with its margin and the binding strip in thissuccessively bent condi- .tion, to the operating instrumentalities of the machine, as before described, and .as is explained in greater detail in the aforesaid patent. The unsecured portions of "the strip adjacent to the successively bent portions are successively wiped .by the -wiper 38 across the secured-together, edges 4 and 8, foldedby the plow around these edges, and pressed by the fold presser 42. The fold presser will not, however, act quite in the same way as heretofore described,.because. it will now press the folded strip not onlyagainst the margin of the sheet, but also against the bent-up edge. The pressure exerted by the fold presser will cause the leather. of the sheet 6 to conform to the shape determined by its initial position illustrated in Fig. 5, with the ultimate result thatthe portion of the strip near the line of Eriritches 233 will become seated in a hollow ofthe leather-sheet, substantially flush wit-n the face 10, illustrated in Fig. 6. The upstanding bent edge of the sheet shown in Fig. 5 will become compressed substantially flat with the face l t the sheet, as is also illustrated in Fig. (3. This compressing action causes the strip2 to he pulled tighiiy away from the upper 6 at thc stitches 233 as in the said prior patent, but

within the angle between the sheet and. the strip. For this reason, it is found, in practice, that the wiper is really unnecessary, though it may be used,since the tight pulling away of the strip 2 at the stitches 233 may be efi'ected by the fold presser if-the stock is properly presented thereto, as above described.

The above-described bending of the successive portions of the margin of the sheet 6 may be effected in many ways without departing from the spirit or scope of the present invention. The preferred construction, which has been found to be very effective, in practice, consists in simply recessing the feed point 30 at 29, where an unrecessed feed point would enga e the margin at the edge 4. The recessed eed point can thereforeclamp only those portions of the stock that are adjacent to the edge 4;, leaving the portions at the edge 4 unclamped. When the feed point clampsthe said portions of the stock, therefore, the strip 2, acting against the feed block 41 and causes the margin at the edge. 4 to lift or bend into the recess 29. The feed point and the feed block therefore advance the stock with the margin near the edge 4 bent up into the recess 29, as is illustrated in Fig. 5. The wiper 38 is similarlyprovided'with a recess 39 adapted to receive the portions of v the strip adjacent to the secured-together edges, as' is also clearly illustrated in Fig.

'5. This construction, furthermore, enables the plow 32,

aid to tight wiping. Theplow 32 is for a ,like'purpose somewhat further hollowed out at 33.

. The invention is obviously not limited to thg'modifications that are shown embodied herein. Other machines and other modifications are within the skill of persons skilled in the art, and all such are considered to be within the spirit of the invention, the scope of which is defined in the appended claims. It is intended to express" in the appended claims all features of novelty that are disclosed herein.

lVhat is claimed is: v p

1. The method of folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the, secured-together edges at an angle to each other, the said method corn n-ismg moving successive portions of up successive portions of the said edge of the sheet, and pressing successive portions] of the strip against the other face .of the,

sheet. w

iii?

a sesame A machine of the class described having, in combination, a support upon which is adapted to rest a sheet of material to one face of which, along an edge, an edge of a strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, means for movion, the unsecured portion of the strip across the secured-together edges, and means for bending up the said edge of the sheet and for feeding the sheet over the support.

3. A folding machine for operating upon a piece of Work comprising a sheet of 1na te rial to one face of Whicn, along an. edge, a strip is secured, the said machine having, in combination, means for supporting the sheet and the strip, means for folding the strip over upon the sheet, bending up the said edge of the sheet, and feeding the sheet and the. strip over the supporting means, and means for operating; any part of the secondnamed means.

l. A machine for folding a strip around the edge of a sheet of material to one face of which, along; the said edge, an edge of the strip is secured so that the sheet and the strip extend fromthe secm'ed rogcther edges at an angle to each other, the said machine having, in combination, means for bending up the said edge of the sheet and for feeding the sheet with the edge so bent and with the free portion of the strip moved across the secnredtogethcr edges, a. Wiper for wiping: the free portion of the strip adjacent to the bent portion ofthe sheet across the secured-together edges, the said means comprising a plow for folding the wiped strip around the secured-together edges, and a fold presscr for pressing the folded strip against the bent edge and the margin along the other face of the sheet.

5. A machine for folding a strip around the edge of sheet or material to one face of which, along the said edge, an. edge of thestrip is secured so that the sheet and the strip eatend from the secured-together edges at an angle to each other, the said machine having, in (Oll'll)lllf;li.l0ll. two teed elements for feeding" the sheet with the said edge of the sheet bent up, oneoi the feed elements having a recess adapted to receive the said bent edge of the sheet. and means :for folding: the free portion of the strip around the bent edge of the sheet.

6. In a machine for folding a strip around the edge of a sheet of material to one face of which, along: the said edge, an edge of the strip secured so that the sheet and the strip extend from the securcd-togcther edges at an angle to each other, a support upon which the sheet is adapted to rest with the said edge of the sheet lientup and with the unsecured portion of the strip moved across the securcdtegether edges, and sniper for wiping the unsecured portions of the strip adjacent to the secured-to gether edges across the secured-together edges, the Wiper having a recess adapted to receive the said portions of the strip adjacent to the secured-together edges.

7. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination. a feed block and. a feed point for feeding the sheet with the said edge of the sheet bent up and With the unsecured portion of the strip moved across the secured together edges, thefeeal point having a recess adapted to receive the said bent edge of the sheet, a wiper for Wipthe unsecured portions of the strip ad" acent to the securedt0gether-edges across the secured-together edges, the Wiper having a recess adapted to receive the said portions of the strip adjacent to the secured-together edges, a plow for folding the strip around the secured-together edges, and a fold presser for pressing the folded portions of the strip against the edge and the margin along the other face of the sheet.

8. A machine as defined in claim 4 in which the plea is hollowed out at the base thereof to receive the portions of the strip adjacent to the securod-together edges.

9. The method of folding a strip around the edge of a sheet of material to one face of which, along the said edge. an edge of the strip is secured so that the sheet and the" strip extend from the secured-together edges at an angle to each other, the said method comprising moving the free portion of the strip across the secured-together edges, folding the moved. portion of the strip around the secured-together edges, and bending up the sheet at the said edge of the sheet.

10. The method of folding a strip around the edge of a sheet of material to oneface of whicln'along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said method comprising folding the tree portion of the strip around the secured-together edges, bending up the sheet, at the said edge of the sheet, and pressing the folded strip against the bent edge and the margin along the other face of the sheet to compress the upstanding hent'edge of the sheet and to press the folded portion of the strip into Contact with the said other face of the sheet. 11. The method of folding a strip around the edge of a shoot oi. material to one face of which, along the said edge, an edge of the strip is stitched, so that the sheet and the strip extend. from. the stitchedto zetlicr edges :11 an angle to each other, the said method comprising folding the free pertions of the strip successively around the stitched-together edges, feeding the sheet and the strip, bending up successise portlons of the sheet, at the said edge of the sheet, under the folded portions of the strip, and .applying pressure to the successively folded portions of the strip and, through them, to the ibent-up edge portions of the press the successively foldedportions of the strip into contact with the said other face of the sheet. g

12." The method of Iolding a strip around the edge of a sheet of material to one face of which, along the said edge,

an edge of the strip is stitched so that the sheet and the strip extend from the stitched-together edges at an angle to each other, the said method comprising folding the free portion of the strip around'the stitched-to etheredges, bendlng up the sheet at the sai ed e of the sheet, under the folded portion of t e strip, applying pressure to the folded portion of the strip and, through it, to the the ed bent-upiedge portion of the sheet to pull thestrip away from the sheet atthe stitch line and to compress the said bent-up edge of the sheet, and rolling the stri a'gainst'the -1 p ed e the sheet *to 13. The method of folding strip around ge of a sheet of mater al to one face of which, along the'said edge, an edge of the strip is stitched so that the sheet and the; strip extend from the stitched-together edges at an angle to each other, the said method comprising feeding the sheet and the strip, folding the free portions of the strip-successively around the stitchedtogether edges, bending up successive portions of the sheet, at the said edge of the sheet, under the folded applying pressure to the successively folded portions of the strip and, through them, to

the ed Of ,.-Wl ll0h, along the said edge, an edge of t he bent-up edge portions of the sheet to pull the successive portions of ,the strip away from the sheet at the stitch line andto compress the successively bent-up portions of th'e edge of the sheet, and rollin againstthe portions of the margin adjacent to the said bent-u p edge along the said other face of the sheet to press the folded portions of the strip into contact with the said other face of the sheet.

14. The method of folding a strip around e of a. sheet-of material to one face the strip is stitched so that the sheet and the strip extend from the stitched-together portions of the edge of the sheet,

trip into;

the sheet on both sides of' portions of the strip, pinching the successively folded portions of the stri at the folds adjacent to the successively field portions of the sheet and, through them, pinching the adjacent bent-up portions of the edge of the sheet along the other face of the sheet to pull the successive portions of'the strip away from the sheet at the stitch line and to compress the successively bent-up and pressing the successively folded portions of the strip into contact with the said other face of the sheet.

the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, means for moving the free rtion of the strip across the secured-toget er edges, and means for folding the free portion of the strip around the secured-together edges, bending 'up the sheet at the said edge of the sheet and press ing the folded rtion of the strip. against the edge and t e margin along the other face of the sheet to compress the bent-up edge of the sheet and to press the folded portion of the strip into contact with the said other face of the sheet;

,16. A machine for folding a strip around the edge .of a sheet of material to one face of which, along the said edge, an edge of the strip is stitched so that the sheet and the. strip extend from the stitched-together edges at an angle to each other, the said machine having, in portions of the strip,

combination, means for folding the free portions of the strip successively around the stitched-together edges, bending up successive portions of the sheet, at the said edge of the sheet, under the folded portions of the strip, and, feeding the sheet with the edge so bent, and means for applying I g pressure to the successively folded ortions the successively folded portions of the strip of the strip and, through them, to t e bentup edge portions of the sheet to pull the successive portions of the strip away from the sheet at the stitch line, to compress the successively bent-up portions of the edge of the sheet and to press the successively folded portions of the strip into contact with the said other face of the sheet.

17; A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the 15. A machine for folding a strip aroundstrip is stitched so that the sheet andtie strip extend from the stitched-together edges at an angle to each other, the said machine having, in. combination, means for supporting the sheet and the strip, means for folding the free portions of the strip successively around the stitched-together edges, heading up successive portions of the sheet at the said edge of the sheet, under the folded portions of the strip, applying pressure to the successively folded portions of the strip and, through. them, to the bent-up edge portions of the sheet to pull the successive portions of the strip away from thesheet at the stitch line and to compress the successively hent up portions of the edge oi the sheet, and rolling the successively folded portions oi the strip against the adjacent portions of the margin alon the said other face of the sheet to press the olded portions of the strip into contact with the Said other face ot the sheet, and means for operating any part of the second- Inemecl means, the supporting niesns and the material being constructed and arranged for relative movement to bring successive por tions or" the materiel. into operative relation to the operating means.

18. A machine for toldinge strip around the edge ot's sheet of material to one face of which, along the said edge, on edge st the ship is stitched so that the sheet and the strip. extend from the stitchedtogether edges at on. sngle to each other, theseid machine having, in coon hinetion, means for .i supporting the sheet and the strl means for folding the free portions of t s stri successively around the stitched-together e gas, feeding the sheet with successive portions of the sheet, at the 7 said edge of the sheet, 200115111) under the folded portions of the strip, applying pressure to the successively folded portions of the strip and, through thein, to the bent ,up' edge portions of the sheet to pull the successive portions of the strio away from the sheet at the stitch line and to compress the successively bentmp portions of the edge of the sheet, and rolling the successively folded portions of the strip against the adjacent portions of the margin along the said other face of the sheet to press the folded portions of the strip into contact with the said other face of the sheet, and means for operating any part of the second-mowed means, i

19. A folding machine for operating upon a piece of Work cmnprising asheetof routerial to one face of which. along on edge,

strip is secured, the said machine,haying, in combination, means for supporting the sheet and the lstrip, moons for tolt iing'tl'ie strip over upon the sheet, bending up the sheet, at the said edge, and pi-cssingthe folded strip against the other face at the sheet, and means for operating any part at of the secondnamed means. 7

20. A folding machine for operating upon a piece of work comprising e sheet. of mate rial to one face of which, along an edge, :2 strip is secured, the said machine having, to m combination, means for supporting the sheet and the strip, means, for folding sue cessive portions of the strip successively over upon the sheet, bending up successive portions of the sheet, at the said edge,s11d press ing the siiccessively folded portions oi the strip against the successive portions the bent edge and adjacent portions of the met=- gin of the sheet along the other face of the sheet, and means for operating any port of the second-named means, the supporting means and the material being constructed and arranged for rel re movement to bring successive portions of the material. into operative relation to the operating mesh;

21.115 folding machine "for operet-i on iii-piece of mprising a material to to i along: an a etripis seen whine in combination, l and the strip and around the said edge, the said means ing elements for bending up successive tions of the margin of the sheet, at th edge, one of the elements-being cons i. of a folder adopted to fold portions oi tit strip successively around the said edge, a fold resser torpressing the SLMZCQSSllK folded portions of the strip ageint the portions of the bent margin and the ed; cent portions oftthe margin along the other face of the sheeh v 22, A..macl1ine for folding e strip around the edge of a sheetof material to one face of which, along the said edge, on edge of strip is stitched so that the sheet and the strip extend from the stitchedtogcther edges at an. angle to each other, the said machine having, in combination, means for soc cessively engaging successive portions the sheet on both sides of the sheet, and means for folding the freeportions of the strip adjecent to th successively engaged our tio of the 1 vely eroundithc SilltullGLl-llfigfitlifi bending up successive portions ti met, at the said edge of the sheet, under the folded portions of theastrip, egplying pressure tothe success ively ioldcc portioii's of the strip adjacent to the si'vel engaged portions of the E'pedge e -up and pressing the some t-ions of the strip into at other face of the sheet,

' of which, along the said edge, an edge of the 23. A machine for folding a strip around the edge of a sheet of material to one face strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, means for feeding the sheet with successive portlons of the margin of the sheet, at the said edge, bent out of the plane of the sheet in a direction away from the strip, and a combined gage and plow for gaging the sheet and folding the strip.

24. The method of folding a strip around the edge of a'sheet of material to one faceof whlch, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said method comprising folding the free portions of the strip successively around the secured-together edges, bending up successive portions of the margin of the sheet, at the said edge of. the sheet, and ressing the successively folded portions of t e strip into contact with the otherface of the sheet.

l 2 5. A foldin machine for operating upona piece of wor comprising a sheet of material to one face of which, along; an edge, a strip is secured, the said machine .having, in combination, means for folding the strip over upon the sheet and bending up the sheet at the said edge, and means for pressingthe strip into contact with the other face of the sheet.

- 26. The method offolding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the at an angle to each other, the said method comprising folding the free portions of the stri successively around the secured-toget er edges, ripping successive portions of the sheet ad acent to the said ed e of the sheet, feeding the sheet and the strlp, bending up the portions of the sheet adjacent to the said successive gripped portions, and pressing the successively folded portions of the strip against the col e and the margin along the other face of t e sheet.

27. A folding machine for operating upon a piece of work comprising a sheet of material to one .face of which, along an edge, a strip is secured, the said machine having, in combination, means for supporting the sheet and the strip, means for successively engaging, at the other face of the sheet, successive "portions of the sheet, and, means for folding the free portions of, the strip adjacent to tips successively engaged portions of the sheet o'er upon'the sheet, bending up successive portions ofthe sheet at the said edge of the sheet, and pressing the successively folded portions-of the strip against the said edge sheet and the I strip extend from the secured-together edges the edge of a sheet of material to one face i of which, along the said ed e, an edge of the .strip is secured so that the s extend from the secured-together edges at an angle to each other, the said machine having, in combination, means for bending the margin'of the sheet, at the said edge, out of the plane of the sheet in a direction away fromthe strip and for feeding the sheet and the strip with the margin so bent and with the unsecured portion of the strip /moved across the secured-together edges, the said means comprising a plow for folding the strip around the secured-together edges, and

a fold presser for rm] to one face of which, along an edge, a strip is secured, there being a ridge at the junction 'between the sheet andthe strip, the said machine havin in combination, a member for engaging t e strip having, a recess ada fee ing the sheet and the strip and pressing the stri \into contact with the other face of the s eet, I

30. A, foldin machine for operating upon a piece 6f worlz comprising a sheet of material to one strip is secured, there being a ridge at the junction between the sheet and the strip, the said machine having, in combination, a member for engaging the strip having arecess adapted to receive the ridge, andmeans pressing the folded sheet against the bent edge and the margin along est and the strip ted to receive the ridge, and means for 1 race of which, along an edge, a

and the strip with the said edge of the sheet so bent.

32. The methdd of folding a strip around the edge of a sheet of material to one face of which along the said edge, an edge of the strip is stitched so that the sheet and the strip extend from the stitched-together edges at an agle to-each other, the said method comprising folding the free portion of. the strip around the stitched-together edges, bending up the sheet at the said edge of the sheet under the folded portions of the strip, and applying presi'sure lo the folded strip and, through it, to the bent-up edge or the sheet to pull the strip away from the sheet at the stitch line and to compress the hentmp edge of the sheet.

33. The method of folding e strip around the edge of a sheet of material to one face of which, along the soid edge, on edge of the strip is secured so that the sheet and the. strip extend from the secured-together edges at an angle to each other, the said method comprising folding the strip around the secured-together edges, bending up the sheet at the said edge of the sheet, feeding the sheet and the'strip with the said edge of the sheet so bent, and pressing the strip against the other face oi the sheei.

34. The method of folding a strip around the edge of a sheet of material to one face of which, along the said edge, on edge of the strip is stitched so that the sheetand the strip extend from the. stitclied-iogether edges at an angle to each other, the said method comprising folding the free portion of the strip around the stitched-to either edges, bending up the sheet at the ssh edge of the sheet under the folded portions of the strip, feeding the sheet and the strip. and

. applying pressure to successive portions of the folded strip and, through them, to the successive portions of the bent-up edge. of the sheet to pull the strip away from the sheet atthe stitch line and to compress the cent-up edge of the sheet.

35. A iolding machine for operating upon :1 piece of work comprising a sheet of ma terial to one face of which, along on. edge,

the strip is secured, the said machine having, in combination, a. plurality of elements for feeding the sheet and the strip. bending up the sheet kit the said edge, and folding the sirip over upon the sl1eet,one-ofihe elements constituting the means for folding the strip around the said edge.

38, A folding i'nuchine for operating upon a piece of work coi'nprising sheet of Jrmterial to one face. of which, along an edge, a strip is secured, the said machine having, in combination, means for bending up the sheet, of the said edge, feeding the sheet and ihc siripxz'lnd folding thesti'ip over upon the sheet, and means for pressing the strip against the other face of the sheet. I

3?, 11 i'olding machine "for operating upon. 11. piece of Work com pi" a sheet of metvrini to one face of Wh 3h. along an edge, n strip sci-med. ihe soul machine having, in wrinihinoiioii. two re -itivciy movshle nzcznhers for gripping the. sheet and the strip ndjurcni' to ihe said edge... one of ihe nieinhers having z-i portion as. i

v --rl 15o the margin oi ihe sheet: near said edge to the said edge, and feeding the short and the strip, he said means hnving e, recess or cut-away portionfor receiving the hemup edge, and means for operating any port of the said means.

39. A folding nmchine for opereiing upon a piece of nor. comprising e. she-elof material to one face of which, along an edge, a strip is secured, ihe said machine having, in combination, a plurality of elen'ients ior feeding the sheet and the strip. bending up the sheet at the said edge, 'iohling the strip over upon the sheet, and pressing the strip against the other face of the sheet, two of the said elements constituting the. feeding means, one of the said two elements having a recess or cut-away portion for receiving the bent-up edge.

40. A folding machine for operating upon a piece of Work comprising a sheet of n11- teriiil to one face of which, along on edge,

'a strip is secured, the said machine-having,

in combination, means for folding the. strip over upon the sheet, and means for feeding the sheet and the strip and for pressing the strip against the other face of the set, the two said means cooperating in bond up the edge of the sheet.

41. A machine for folding :1 strip around the edge of a sheet of nniieriul in one face of which, along the said edge, on edge of the strip is stitched. so that the sheel and the strip extend from the stitch(id-together edges at an angle to each ofiher, he said machine having, in comhmorlon. means for snpporting the sheet and the strip. means for folding the free portion of the strip around (he stiicheddogether edges, bending up the sheet, at the said edge of the sheet. under the folded portions of the strip, feeding the sheet and the strip over-film supporting means, and applying prcssureto iho folded portions of the strip rind, through them. to

the henbup edge portions of he sheet to pull the strip away from ihc sheei oi. the stitch line and to compress the hcnt up edge portions-oi (he sheet. and means for *rmr-rn. ing any port of the seconddimmed means.

ETA folding machine for operiiiing upon a piece o'l n'orli' comprising: a shemjoi' more rini to one inc-e of which. along on wig-r. 1-; strip is secured, there being :i junction between the sheen and rip, (he

i an

means said machine having, n combination, a plurality of elements for bending up the sheet at the said edge, and pressing the strip against the other face of the sheet, one of the elements having a hollowed-out portion adapted to receive the ridge.

43. A folding machine for operating upon a piece of work comprising a sheet of mate rial to one face of which, along an edge, a strip is secured, there being a ridge at the junction between the sheet and the strip, the said machine having, in combination, a plurality of elements for bending up the sheet at the said edge, feeding the sheet and the strip and pressing the strip against the other face of the sheet, one of the elements having a hollowed-out portion adapted to receive theridge.

44. A folding machine for operating upon a piece of Work comprising a sheet of mate-- rial to one face of which, along an edge, a strip is secured, there being a ridge at the junction between the sheet and the strip, the said machine having, in combination, e mem- In testimon whereof I have hereunto subscribed my name this-lstday of Novern her, 1922.

ANDREW i ninnisss'rnon. 

